Apr 04, 2017  System 7 (codenamed 'Big Bang' and sometimes retrospectively called Mac OS 7) is a single-user graphical user interface-based operating system for Macintosh computers and was part of the classic Mac OS line of operating systems. It was introduced on May 13, 1991, by Apple Computer.

SheepShaver is an open-sourcePowerPCApple Macintoshemulator originally designed for BeOS and Linux. The name is a play on ShapeShifter,^[1] a Macintosh II emulator for AmigaOS (made obsolete by Basilisk II), which is in turn not to be confused with a third-party preference pane for Mac OS X with the same name. The ShapeShifter and SheepShaver projects were originally conceived and programmed by Christian Bauer. However, currently, the main developer behind SheepShaver is Gwenolé Beauchesne.

History[edit]

SheepShaver was originally commercial software when first released in 1998, but after the demise of Be Inc., the maker of BeOS, it became open source in 2002.^[2] It can be run on both PowerPC and x86 systems; however, it runs more slowly on an x86 system than on a PowerPC system, because of the translation between the PowerPC and Intel x86 instruction sets.^[3] SheepShaver has also been ported to Microsoft Windows.^{[citation needed]}

As a free software, a few variants exist to simplify the installation process on Intel-based Macs:

• ‘Sheep Shaver Wrapper’^[4] is built off of Sheep Shaver but it does some of the bundling work for the user.
• 'Chubby Bunny'^[5] also simplifies the set up process of OS 9 visualization on Intel Macs running OS X.

Features[edit]

SheepShaver is capable of running Mac OS 7.5.2 through 9.0.4^[6] (though it needs the image of an Old World ROM to run Mac OS 8.1 or below^[7]), and can be run inside a window so that the user can run classic Mac OS and either BeOS, Intel-based Mac OS X, Linux, or Windows applications at the same time.

Although SheepShaver does have Ethernet support and CD-quality sound output,^[8] it does not emulate the memory management unit.^[9] While adding MMU emulation has been discussed, the feature has not been added because of the effort required in implementing it, the impact on performance it will have and the lack of time on the part of the developers.

See also[edit]

References[edit]

1. ^'The Official SheepShaver Homepage'. Retrieved 15 December 2012.
2. ^'The Official SheepShaver Homepage'. Retrieved 15 December 2012.
3. ^'SheepShaver (wayback machine)'. Archived from the original on March 1, 2009. Retrieved 16 December 2012.
4. ^'The SheepShaver Wrapper for OS X'. Retrieved 11 February 2014.
5. ^'The SheepShaver Wrapper for OS X'. Retrieved 11 February 2014.
6. ^'The Official SheepShaver Homepage'. Retrieved 15 December 2012.
7. ^'Setting up SheepShaver for Windows'. Retrieved 15 December 2012.
8. ^'The Official SheepShaver Homepage'. Retrieved 15 December 2012.
9. ^'SheepShaver (wayback machine)'. Archived from the original on March 1, 2009. Retrieved 16 December 2012.

External links[edit]

• SheepShaver for x86(in Japanese)

General information

What is SheepShaver?

SheepShaver is a MacOS run-time environment for BeOS and Linux that allows you to run classic MacOS applications inside the BeOS/Linux multitasking environment. This means that both BeOS/Linux and MacOS applications can run at the same time (usually in a window on the BeOS/Linux desktop) and data can be exchanged between them. If you are using a PowerPC-based system, applications will run at native speed (i.e. with no emulation involved). There is also a built-in PowerPC emulator for non-PowerPC systems.

SheepShaver is distributed under the terms of the GNU General Public License (GPL). However, you still need a copy of MacOS and a PowerMac ROM image to use SheepShaver. If you're planning to run SheepShaver on a PowerMac, you probably already have these two items.

Supported systems

Ford 7.3 fuel line diagram. SheepShaver runs with varying degree of functionality on the following systems:

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• Unix with X11 (Linux i386/x86_64/ppc, NetBSD 2.x, FreeBSD 3.x)
• Mac OS X (PowerPC and Intel)
• Windows NT/2000/XP
• BeOS R4/R5 (PowerPC)

Some of SheepShaver's features

• Runs MacOS 7.5.2 thru 9.0.4. MacOS X as a guest is not supported.
• Color video display
• CD quality sound output
• Access to floppy disks, CD-ROMs and HFS(+) partitions on hard disks
• Easy file exchange with the host OS via a 'Host Directory Tree' icon on the Mac desktop
• Internet and LAN networking via Ethernet
• Serial drivers
• SCSI Manager (old-style) emulation